title: Contraction and stiffness changes in collagenous arm ligaments of the stalked crinoid Metacrinus rotundus (Echinodermata).
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D001696:Biomechanical Phenomena; D003094:Collagen / Q000187:drug effects*; D004447:Echinodermata / Q000502:physiology*; D005121:Extremities / Q000502:physiology*; D007564:Japan; D009068:Movement / Q000187:drug effects*; D011188:Potassium / Q000494:pharmacology; D012623:Seawater / Q000737:chemistry; D013268:Stimulation, Chemical
chemical_list: D003094:Collagen; D000109:Acetylcholine; D011188:Potassium